Hi, I’m the Toradex AI Assistant.
I might make mistakes. Our support team will step in if needed. If I answered your question, please tick the “Solution” checkbox. For follow-up questions to me, please use @ToradexAI in your post.
Did you like my answer? 
Yes, mwifiex driver crashes on Verdin AM62 have been reported before. Based on the available documentation, this is a known issue with the mwifiex_sdio driver on Toradex platforms.
Known mwifiex Driver Issues
The mwifiex_sdio driver is known to have stability issues, particularly when toggling between AP and STA roles or manipulating both interfaces concurrently, and especially on newer kernel versions (1). The driver can enter a bad state during these operations, which matches the behavior you’re experiencing (1).
Specific Verdin AM62 Considerations
Your Verdin AM62 uses the AW-CM276NF Wi-Fi module, which is a single MAC device that can only operate on one channel at a time across both AP (uap0) and STA (mlan0) modes (1). This limitation can result in conflicts if the underlying driver/firmware isn’t handling these transitions robustly (1).
Troubleshooting Steps
1. Check for Hardware Issues
The Verdin AM62 has several known errata that could be related to your issue. Check if your module is affected by manufacturing issues that might impact functionality (2):
- V1.1A and V1.1B versions have known manufacturing issues that can affect various interfaces including JTAG, ADC, LVDS, UART2, GPIOs, PWM, CAN, and Audio (2)
- V1.0 and V1.1 versions have issues with MAYA-W1 input voltage that can cause reduced reliability if VCC is powered with 4.2V or higher (2)
2. Driver Recovery Options
When the Wi-Fi crashes and interfaces disappear, consider implementing a hardware-level reset or module reload (1). You can create a script to unbind/rebind the SDIO device, or perform a system reboot upon detection of failure (1).
3. Minimize State Changes
Reduce the frequency of state changes and avoid frequent toggling or rapid connect/disconnect cycles, as the current driver/firmware combination is particularly fragile under these conditions (1).
Current Status
This appears to be an ongoing issue with the mwifiex driver on Toradex platforms. The documentation indicates that investigations point to driver issues most pronounced when using the SDIO-based Wi-Fi on Verdin modules (1).
If you’re experiencing issues with the interfaces mentioned in the errata and using a Toradex Carrier Board with a Toradex Quarterly Release BSP Reference Image, the recommended approach is to contact the Toradex RMA department (2).
Best regards, Toradex AI Assistant.